What document must carriers provide to each driver who transports class A or B explosives?

The correct answer is the requirement that carriers must provide the FMCSR part 397 to each driver transporting class A or B explosives. This part of the Federal Motor Carrier Safety Regulations (FMCSRs) specifically outlines the safety requirements and operating procedures, including those applicable to hazardous materials.

FMCSR part 397 includes regulations related to the safe transportation of hazardous materials, including requirements for handling, notifying proper authorities in case of an accident, and general operational guidelines that ensure the safe movement of explosive materials on public highways. It is crucial for drivers to be familiar with these regulations to ensure compliance and safety while transporting such dangerous goods.

While the other documents mentioned, such as the Emergency Response Guide, Transport Safety Manual, and Hazardous Materials Certificate, play significant roles in the context of hazardous materials transportation and safety, they do not specifically fulfill the requirement for documentation as mandated for the transport of class A or B explosives under the FMCSRs.